Vulnerability Details : CVE-2019-11366
Potential exploit
An issue was discovered in atftpd in atftp 0.7.1. It does not lock the thread_list_mutex mutex before assigning the current thread data structure. As a result, the daemon is vulnerable to a denial of service attack due to a NULL pointer dereference. If thread_data is NULL when assigned to current, and modified by another thread before a certain tftpd_list.c check, there is a crash when dereferencing current->next.
Vulnerability category: Memory CorruptionDenial of service
Products affected by CVE-2019-11366
- cpe:2.3:a:atftp_project:atftp:0.7.1:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-11366
1.36%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 78 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-11366
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:N/A:P |
8.6
|
2.9
|
NIST | |
|
5.9
|
MEDIUM | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H |
2.2
|
3.6
|
NIST |
CWE ids for CVE-2019-11366
-
The product dereferences a pointer that it expects to be valid but is NULL.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-11366
-
https://www.debian.org/security/2019/dsa-4438
Debian -- Security Information -- DSA-4438-1 atftp
-
https://sourceforge.net/p/atftp/code/ci/382f76a90b44f81fec00e2f609a94def4a5d3580/
atftp / Code / Commit [382f76]Patch;Third Party Advisory
-
https://seclists.org/bugtraq/2019/May/16
Bugtraq: [SECURITY] [DSA 4438-1] atftp security update
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https://lists.debian.org/debian-lts-announce/2019/05/msg00012.html
[SECURITY] [DLA 1783-1] atftp security update
-
https://pulsesecurity.co.nz/advisories/atftpd-multiple-vulnerabilities
atftpd - Multiple Memory Corruption Vulnerabilities (CVE-2019-11365, CVE-2019-11366)Exploit;Third Party Advisory
-
https://security.gentoo.org/glsa/202003-14
atftp: Multiple vulnerabilities (GLSA 202003-14) — Gentoo security
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https://usn.ubuntu.com/4540-1/
USN-4540-1: atftpd vulnerabilities | Ubuntu security notices | Ubuntu
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